Gas-producer



(No Model.) 4

J. ZELLWEGER.

GAS PRODUCER.

No. 271,673. i Patented Feb. 6, 1883.

j?? n f 7,.

d Zi WITNEEEEE- INJEN-I'DR* @wiz/M ,L Zaawy/ @Ca/Wwf @y Wh@ v may -ingof gas-producers is to keep the combus- `out disturbing the body ofthefuel in the pro- IJNTTED STATES PATENT Ordnen.

JOHN ZELLWEGER, OF CHICAGO, ILLINOIS.

GAS-PRODUCER.

I SPECIFICATION forming part of Letters Patent No. 271,673, datedFebruary 6, 1883.

(No model.)

To all 'whom it may concern Be it known that I, JOHN ZELLWEGER, ofChicago, inthe county ot' Cook and State ot' Illinois, have inventedcertain new and useful Improvements in Gras-Producers; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

The invention relates to the construction of that part ot' gas-producersin which the cornbuston of the fuel takes place and in which the ashesand clinkers accumulate; and it has for its object to afford betterfacilities for cleaning the tire. Therefore the invention consi/sts inthe devices and combinations of devices employed by me, as hereinafterdescribed and specih'oally claimed.

1n the accompanying drawings, Figure l represents a longitudinalvertical section of a gas-producer having my improvements; Fig. 2, afront view and transverse vertical section of a double producer.

Like letters designate corresponding parts in both the figures. v

A denotes the coking-chamber5 B, the hearth or hearth-plate; C, thecombustior1chau1 ber; D, the cooling-chamber or ash-pit underneath thehearth; a, a horizontal tlue above the hearth, leading frornthe combnstion-chamber; b, a vertical ilue behind the hearth, leading from the due(t to the cooling-chamber; E, the bridge or ceiling covering the lines aand b; c, a step-grate; d, a door in front ot' cooling-chamber orash-pit, and c a door for closing the entire opening to the furnace; f,an'opening for charging the coking-chamber with fresh fuel, and g thegas-conducting line.

One principal condition to the effective workiion-chamber or lire-placeclear of clinkers and ashes. Gas-producers should therefore beconstructed so that the remnants from the fuel can be quickly andconveniently removed withducer-chamber and without a waste of fuel. Withthese objects in view I have constructedthelowerpartoftheproducingchamber, knownasthecombustion-chamberorire-place,of suitable width transversely,according to the size of the producer, but of limited dimensions in thelongitudinal direction. Further, I have provided a hearth, B, at thebottom, upon which the body of the fuel rests, and have provided twoopenings above thehearthone in the front wall andthe other in the rearwall; and for the purpose ot' preventing the fuel from falling throughthese openings, I close the one in front by a step-grate, c, and Iextend the rear opening backward through the rear wall of thecombustion-chamber beyond the foot of the natural slope of the fuel inthe producer. Therearopening-averticaldue,b thus communicates directlywith the ash-pit or cooling-chamber D under the hearth, and indirectlythrough the flue rt under the bridge E with the combustion-chamber C.'With this arrangement an)7 clinkers or ashes accumulating in thecombustion-chamber can be pushed backward through the horizontal channela to the vertical iiue b, and there dropped into the ash-pit orcooling-chamber D.

The step-grate c in the front opening is more desirable than a gratewith vertical or inclined bars, because it gives better support to tinefuel or coke, admits the largest possible quantity of atmospheric air,and above all affords easy access to all parts of the combustionchamber.

'Ihe rear spring, a, may be divided into sections by vertical orhorizontal partitions.

The best material for the hearth is brick or tile; but it may be ametallic plate. A gate in place of the hearth is more subject to wearand tear, and will cause more or less waste of fuel through theinterstices between the bars.

The ash-pit D may be constructed as a tank to contain water, which as itis evaporated by the glowing clinkers will rise and be decomposed in theproducer-chamber and will forni into combustible gases.

I am aware that it is not new to construct a furnace with a Step-grate,and I am also aware that it is not new to construct furnaces with avertical line extending downwardly from the rear of the hearth to theash-pit; but I am not aware that any furnace has been constructed priorto my invention thereof having a solid hearth-plate, acombustion-chamber of less dimension longitudinally than transversely,and having an openingin the'front wall IOO closed by n siepgrme, and a.rear opening exlendedbnek through thx rear Wall of thecoinbnstion-ellainber, and a horizontal flue, a, and vertical Hue. b,bridge Egnnd coolingehamber D. s shown and described herein.

Vha-t I claim is- A gus-producer having ookng'clinmber A,

` solid hearth-plate B', combustion-chamber (j,

of less dimension longitudinally than trans versely, and having openingsin the front and rear walls, respectively, said front openings beingclosed by a mangiate, c, and said rear openings being extended backwardthrough the rear wall of .the combnstion-chamber, as described, thehorizontal ilue a, and vertical fine b, und the coolingellainber D, undbridge E, snbstzintiallyas and for the purpose set forth.

In testimon7 that I claim the foregoing as my invention I at'x mysignature in presence zo of two witnesses.

JOHN ZELLWEGER.

fitnessesz F. W. KASEHAGEN, F. U. ADAMS.

